$(document).ready(function() {
$('.NavHoverRight li a').hover(function() {
        $(this).prev('img').attr("src", "/images/layout/Red_Arrowrt.gif");
    }, function()
    { $(this).prev('img').attr("src", "/images/layout/Blue_Arrowrt.gif"); }
	    );
    $('.NavHoverLeft li a').hover(function() {
        $(this).prev('img').attr("src", "/images/layout/Red_Arrowlt.gif");
    }, function()
    { $(this).prev('img').attr("src", "/images/layout/Blue_Arrowlt.gif"); }
	    );
});